The endgame is very limited and the games requirements to getting its own advantages to making it easier for you (horses, enchantments, armor, etc.) are overly exaggerated to the point where either playing or paying is a loss.
The questing to get to LVL 60 can be done in under 6-10 hours, containing underdeveloped areas strictly for PVE and some dungeons which have balancing issues and require an amount of specific classes to complete.
The classes you start with contain problems and balancing and have a distinct difference which determines how useless or how useful you are. Some people wouldn't want a guardian in their dungeon run because of the tanking being useless to a boss enemy that will just overwhelm you with damage and aggro imediately, but would want a guardian for PVP because of the defense it has, making the person who intialy chose that class rather regretful. The mages do a lot of DPS damage which makes them a favorable class.
There are anomalies in this game that are aggrevating to see. PVE mini bosses sometimes dropped themed armor pieces that have better stats by a little but look very cool to edit, but sometimes you can get a guardians armor as a mage and this armor cannot be sold, traded, only worn and destroyed. But... you can't wear it either... so yea. The currency is limited also, where as after lvl 60, astral diamonds would become your main currency where as the coins would just be petty money to buy potions.
The end game is very small and limited and will only have you playing for about one or two weeks before realizing what you're doing everyday is farming for goals like higher gear-rank, enchantments, wealth, mounts, armor, campaigns, which honestly don't open anymore of the game to you after thats completed.